Killings followed years of withdrawal

Before Elliot Rodger killed six people and took his own life in California last month, his mental health and increasingly withdrawn behavior worried his parents and others.
http://www.nytimes.com/2014/06/02/us/elliot-rodger-killings-in-california-followed-years-of-withdrawal.html?emc=edit_th_20140602&amp;nl=todaysheadlines&amp;nlid=68163943